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  <a name="EN-US_TOPIC_0000002042963184"></a><a name="EN-US_TOPIC_0000002042963184"></a>
  <h1 class="topictitle1">Creating a File Name Extension Filtering Rule</h1>
  <div id="body0000001337156461">
   <p id="EN-US_TOPIC_0000002042963184__p82288715011">Known ransomware file name extensions to be intercepted are preset in the system. You can refer to this section to add file name extensions.</p>
   <div class="section" id="EN-US_TOPIC_0000002042963184__section9947202395315">
    <h4 class="sectiontitle">Procedure</h4>
    <ol id="EN-US_TOPIC_0000002042963184__ol159217814715">
     <li id="EN-US_TOPIC_0000002042963184__li17143826135210"><span>On the navigation pane, choose <strong id="EN-US_TOPIC_0000002042963184__b163181442175811">Data Security</strong> &gt; <strong id="EN-US_TOPIC_0000002042963184__b173183429583">Ransomware Protection</strong> &gt; <strong id="EN-US_TOPIC_0000002042963184__b133190428581">File Interception</strong>.</span></li>
     <li id="EN-US_TOPIC_0000002042963184__en-us_topic_0000001166366216_en-us_topic_0000001091431193_li12591123311535"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000002042963184__uicontrol793881919513"><b>Create</b></span>.</span><p></p><p id="EN-US_TOPIC_0000002042963184__p24069190226">The <strong id="EN-US_TOPIC_0000002042963184__b14155112615618">Create File Name Extension Filtering Rule</strong> dialog box is displayed.</p> <p id="EN-US_TOPIC_0000002042963184__p184581835143819"><span><img id="EN-US_TOPIC_0000002042963184__image75941211351" src="en-us_image_0000002079002621.png" width="387.03000000000003" height="129.389981"></span></p> <p id="EN-US_TOPIC_0000002042963184__p71556266352"></p> <p></p></li>
     <li id="EN-US_TOPIC_0000002042963184__li1236704561811"><span>Set parameters of the file name extension filtering rule.</span><p></p><p id="EN-US_TOPIC_0000002042963184__p4779111121910"><a href="#EN-US_TOPIC_0000002042963184__table373910544193">Table 1</a> describes the related parameters.</p>
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       <a name="EN-US_TOPIC_0000002042963184__table373910544193"></a><a name="table373910544193"></a>
       <table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000002042963184__table373910544193" frame="border" border="1" rules="all">
        <caption>
         <b>Table 1 </b>Parameters of the file name extension filtering rule
        </caption>
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          <th align="left" class="cellrowborder" valign="top" width="22.1%" id="mcps1.3.2.2.3.2.2.2.3.1.1"><p id="EN-US_TOPIC_0000002042963184__p673965415198">Parameter</p></th>
          <th align="left" class="cellrowborder" valign="top" width="77.9%" id="mcps1.3.2.2.3.2.2.2.3.1.2"><p id="EN-US_TOPIC_0000002042963184__p6739125421915">Description</p></th>
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          <td class="cellrowborder" valign="top" width="22.1%" headers="mcps1.3.2.2.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002042963184__p27393548197">File Name Extensions to Be Intercepted</p></td>
          <td class="cellrowborder" valign="top" width="77.9%" headers="mcps1.3.2.2.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002042963184__p16739175417199">File name extensions to be intercepted. You can enter one or more file name extensions.</p> <p id="EN-US_TOPIC_0000002042963184__p35134612237">[Value range]</p>
           <ul id="EN-US_TOPIC_0000002042963184__ul19507182614253">
            <li id="EN-US_TOPIC_0000002042963184__li165071226112512">The value contains 1 to 127 characters.</li>
            <li id="EN-US_TOPIC_0000002042963184__en-us_topic_0000001159963183_li18249801">A file name extension can contain only digits, letters, spaces, and special characters (!"#$%&amp;'()*+,-./:;&lt;=&gt;?@[\]^_`{|}~). Wildcards <strong id="EN-US_TOPIC_0000002042963184__b17451056172116">?</strong> and <strong id="EN-US_TOPIC_0000002042963184__b17925105822111">*</strong> are supported, and wildcard <strong id="EN-US_TOPIC_0000002042963184__b73231217221">*</strong> must be the last character. For example, <strong id="EN-US_TOPIC_0000002042963184__b207566722217">T?X</strong> or <strong id="EN-US_TOPIC_0000002042963184__b15316111202220">Tx*</strong>.</li>
            <li id="EN-US_TOPIC_0000002042963184__li195691318145513">Multiple file name extensions are separated by commas (,).<p id="EN-US_TOPIC_0000002042963184__en-us_topic_0000001541762401_en-us_topic_0000001129168728_p262017521521"><a name="EN-US_TOPIC_0000002042963184__li195691318145513"></a><a name="li195691318145513"></a>[Example]</p> <p id="EN-US_TOPIC_0000002042963184__en-us_topic_0000001541762401_en-us_topic_0000001129168728_p166911934511">txt,docx,xlsx</p></li>
           </ul></td>
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          <td class="cellrowborder" valign="top" width="22.1%" headers="mcps1.3.2.2.3.2.2.2.3.1.1 "><p id="EN-US_TOPIC_0000002042963184__p137391254181916">Associate with vStore</p></td>
          <td class="cellrowborder" valign="top" width="77.9%" headers="mcps1.3.2.2.3.2.2.2.3.1.2 "><p id="EN-US_TOPIC_0000002042963184__p1673917542196">Indicates whether to associate with vStores.</p>
           <ul id="EN-US_TOPIC_0000002042963184__ul12416154142612">
            <li id="EN-US_TOPIC_0000002042963184__li24164549260">Disabled: The file name extension filtering rule is created but is not associated with any vStore.</li>
            <li id="EN-US_TOPIC_0000002042963184__li5297105612269">Enabled: The file name extension filtering rule is created and vStores to be associated are selected from the vStore list.</li>
           </ul>
           <div class="note" id="EN-US_TOPIC_0000002042963184__note280018516354">
            <span class="notetitle"> NOTE: </span>
            <div class="notebody">
             <p id="EN-US_TOPIC_0000002042963184__p17285164910332">The preset file name extension filtering rules are associated with all vStores in the system by default.</p>
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       </table>
      </div> <p></p></li>
     <li id="EN-US_TOPIC_0000002042963184__li5766134019479"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000002042963184__uicontrol19452464012"><b>OK</b></span>.</span></li>
    </ol>
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     <strong>Parent topic:</strong> <a href="en-us_topic_0000002042963220.html">Configuring a File Name Extension Filtering Rule</a>
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